Now showing items 1-3 of 3

    • A PLL with ultra low phase noise for millimeter wave applications 

      Gai, Xiaolei; Liu, Gang; Chartier, Sébastien; Trasser, Andreas; Schumacher, Hermann
      An ultra low noise phase locked loop (PLL) for millimeter wave applications is presented. The complete design includes a mixer type phase detector, a divide-by-32 frequency divider, a VCO and an off-chip active low pass ...
    • PLL based fully-integrated LO generation for wideband RF front-ends 

      Gai, Xiaolei (Universität Ulm, 2018-05-16)
      This dissertation describes Phase Locked Loop (PLL) based Local Oscillator (LO) designs for RF front-end modules targeting wideband wireless communications systems from microwave to millimeter-wave ranges. With the increase ...
    • Towards a highly flexible spectrum sensing platform for cognitive radio networks 

      Lohmiller, Peter; Elsokary, Ahmed; Valenta, Václav; Gai, Xiaolei; Trasser, Andreas; Schumacher, Hermann; Chartier, Sébastien
      Multi-nodal spectrum sensing is a promising approach to robust cognitive radio networks, which provides increased adaptability to database-anchored sharing approaches. Yet its commercially viable implementation requires ...